Added the bumpalo::boxed::Box<T> type. It is an owned pointer referencing a
bump-allocated value, and it runs T's Drop implementation on the
referenced value when dropped. This type can be used by enabling the "boxed"
cargo feature flag.
3.3.0
Released 2020-05-13.
Added
Added fallible allocation methods to Bump: try_new, try_with_capacity,
and try_alloc_layout.
When reallocing, if we allocate new space, we need to copy the old
allocation's bytes into the new space. There are old_size number of bytes in
the old allocation, but we were accidentally copying new_size number of
bytes, which could lead to copying bytes into the realloc'd space from past
the chunk that we're bump allocating out of, from unknown memory.
If an attacker can cause reallocs, and can read the realoced data back,
this could allow them to read things from other regions of memory that they
shouldn't be able to. For example, if some crypto keys happened to live in
memory right after a chunk we were bump allocating out of, this could allow
the attacker to read the crypto keys.
Beyond just fixing the bug and adding a regression test, I've also taken two
additional steps:
While we were already running the testsuite under valgrind in CI, because
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Bumps bumpalo from 2.6.0 to 3.4.0.
Changelog
Sourced from bumpalo's changelog.
Commits
bb1b127
Bump to version 3.4.0e7e2ba5
Add additional documentation/examples aboutBox
and droppingc62111f
Box for bumpalo (#76)11a8b9e
Merge pull request #75 from immunant/master348c610
Fixed version number in changelog384b538
Added chunk_capacity to changelogdaddce1
Merge branch 'try'6d52b59
Bump to version 3.3.06c9227e
Clean up fallible allocation tests a little9306fad
Fixed try_alloc testDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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